Numerical analysis of thermal deformation and residual stress in automotive muffler by MIG welding

被引：27

作者：

Lee, S. H. ^{[1
,2
]}

Kim, E. S. ^{[1
]}

Park, J. Y. ^{[1
]}

Choi, J. ^{[1
]}

机构：

[1] Korea Inst Ind Technol, 55 Jongga Ro, Ulsan 44413, South Korea

[2] Univ Ulsan, Sch Mat Sci & Engn, 93 Daehak Ro, Ulsan 44610, South Korea

来源：

JOURNAL OF COMPUTATIONAL DESIGN AND ENGINEERING | 2018年 / 5卷 / 04期

基金：

新加坡国家研究基金会;

关键词：

MIG welding; Automotive muffler; Thermal deformation; Weld simulation; Residual stress; Heat source fitting; SIMULATION; DISTORTION; PREDICTION; SPEED; BUTT; INPUT; FEM;

D O I：

10.1016/j.jcde.2018.05.001

中图分类号：

TP39 [计算机的应用];

学科分类号：

081203 ; 0835 ;

摘要：

In the automotive industry, metal inert gas (MIG) of welding technology is widely used for automotive muffler fabrication. However, the muffler is distorted by thermal deformation during the welding process. In this paper, the prediction of MIG welding-induced deformation and residual stress are simulated by SYSWELD software. The cross-section shapes of the molten pool predicted by the numerical analysis are compared to the experimental results. In the results of the stress, while compressive stresses are produced in regions away from the weld, high tensile stresses are produced in regions near the weld. Deformation values are calculated as 2.5 mm. The location of the actual welding deformation was similar to the experimental results. Based on the results, the methods to optimize the welding procedure will be provided by SYSWELD to improve muffler productivity. (C) 2018 Society for Computational Design and Engineering. Publishing Services by Elsevier.

引用

页码：382 / 390

页数：9

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